This transcript has been automatically generated and may not be 100% accurate.

I ... the the the ... the last my mom ... what started off is created out there seemed to challenge conformity has gone commercial ... as part of advertisements in and ... watched mob you know ... PR campaign ... they've commercialized every which way this Sunday ... song and dance sounds T Mobile a surprise London commuters into thousandnine ... teaching this class mob advertisement that went viral on line ... this generated one point eight million dollars with a free PR exposure ... reports ad agency Saatchi and Saatchi ... the year dance collective area flash mile was paid one thousand dollars to six but where did my denied the Coliseum ... L A based company Flash mob America ... dedicated to flash mob production ... the companies build one point five million dollars over the past four years ... and says it's profitable ... the charges anywhere from five thousand to eighty thousand dollars to stage the ants breakdowns in the middle of corporate conferences ... the Amen is mired in some ... fast money did I actually ... was ... a speaker ... and so I get to the ... Lago and ... no going back to my notes try my notes ... um ... they haven't really come to Molly ... how will it had no idea ... my ... the bank bills are all all ... they were disappointed because Rudy Giuliani was late and there was a red team actually won this ETN it can ... make ... if ... and the music comes on and they know what's up ... I ... the the the the the the the ... I ... will it be ... it ... the the ... HSBC today ... regional stocks month's challenge rather than embraced commercial space ... the first credited last month was staged in in your Guinea seized in two thousand three ... hundred and fifty people pretended they were shopping for love drugs for their commie ... there were a lot of people asking why why why is this happening is here ... will this turn out to be some marketing campaign for some company or ... you can really worried about it's the it's the it's too late ... Qantas is we've almost lost a little bit but these days if you if your basis of Jaded about marketing just assume that the market with its higher really matter to people that not the marketing for something ... today's mission is called welcome back ... to a few random stranger and welcome home ... with Charlie Todd engineered this public frankly the group of improv everywhere into thousandeight ... the two years later across the pond at London's Heathrow airport ... T Mobile UK organized a group of people to welcome home strangers ... Todd said that a flooded announced last week he was involved with T Mobile splashed on you know it's frustrating to someone who is ... really doing it to have to be compared to the person that was done ... with cameras on cranes and things like that ... today Todd organizes the annual no pants subway ride ... I think if I had a bunch of people show up for the no chance of a ride and ... you know when they arrive to you I have with big banners like his underwear everywhere you know that people would be really turned off by that ... for The Wall Street Journal this is Linda freinds ...